3.3.10 PROFIBUS DP (OPTION)
B
21
3 - Electrical Connections
•
Galvanic isolation 500 Vac/1 min
• Compliance to the EIA RS485
standard for PROFIBUS DP;
• Connecting cable: twisted
pair cable as per PROFIBUS
specifications (e.g. Belden
B3079A);
• Max. lenght: 100 m at 12 Mb/s
Termination resistors 220Ω and
390Ω (
1
/
4
W, ±5%) for external
mounting on the initial and end-
ing PROFIBUS stations only.
Detailed information concerning wiring and cables can be found on
the PROFIBUS Product Guide or on Internet at:
http://www.profibus.com/online/list
DP
DN
DG
VP
Initial
PROFIBUS
station
DP
DN
DG
VP
Other
PROFIBUS
stations
DP
DN
DG
VP
Ending
PROFIBUS
station
220Ω
390Ω
390Ω
220Ω
390Ω
390Ω
To make the connections easier, a D-Sub type (9 poles) connec-
tor: model AP-ADP-PRESA-DSUB/9P
Must be used with a 9PIN male ERNI type part no. 103648 or sim-
ilar connector.
X5 D-SUB 9 poles Signal
Description according to
PROFIBUS specifications
4
1 3 RxD/TxD-P (DP)
Receive data/transmission
data plus
6
2 8 RxD/TxD-N (DN)
Receive data/transmission
data negative
VP (VP)
3 5 DGND (DG)
Data transmission potential
(ground to 5V)
Supply voltage of the termi-
nating resistance-P, (P5V)
x5-uk-ed5 17-09-2009 14:53 Pagina 21
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